Coast live oak with limbs killed by the sudden oak death pathogen, Phytophthora ramorum, possibly spread from nearby infected California Bay laurel.

Coast live oak with dead limbs dropped. Phytophthora ramorum may have spread from nearby infected California bay laurel, Umbellularia californica. Marin Co. by Pavel Svihra.  Credit: Pavel Svihra
Credit: Pavel Svihra